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Finding the Fourth Proportional to 2,981.07, 4,471.11 and 789.84

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Solution

The fourth proportional to 2,981.07, 4,471.11 and 789.84 is: 1,184.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,981.07 : 4,471.11 = 789.84 : x
  2. Step 2: Convert to fraction form
    2,981.07/4,471.11 = 789.84/x
  3. Step 3: Cross multiply
    2,981.07x = 4,471.11 × 789.84
  4. Step 4: Simplify right side
    2,981.07x = 3,531,461.52
  5. Step 5: Solve for x
    x = 3,531,461.52/2,981.07
  6. Step 6: Final answer
    x = 1,184.63

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